The valve is inserted through the backside of the wheel and clamped from the front with a nut and washer
A metal, or metal and rubber, tubular stem containing a valve core and cap. The mounting end may have a base with a fitting designed for mounting on a pneumatic tire, inner tube, or tire rim, to permit and retain inflation or permit deflation. The mounting end may be internally threaded for adaptability to a valve spud or may be provided with cure-on or clamp in features. The other end is externally threaded to accommodate a valve cap, and internally threaded to accommodate the valve core.
Dept. of the Army 
Dept. of the Air Force 
U.s. Marine Corps 
Dept. of the Navy 
U.s. Postal Service - Procurement and Supplies Dept. Classification: Other taps, cocks, valves, etc., nesoi
NSN 5910-00-952-9022
NSN 6135-00-866-2311
NSN 5930-01-190-0367
NSN 5915-01-141-6726
NSN 6150-01-521-8131
NSN 5945-00-932-0080
NSN 6220-01-054-9112
NSN 6320-01-462-2295
NSN 7035-00-782-7046
NSN 6650-01-459-5958
NSN 5950-01-302-7012
NSN 5835-01-482-1591